Means for pumping oil-wells



(No Model.) 2 Sheets-Sheet 1.

J. TAYLOR. MEANS FOR PUMPING OIL WELLS. No. 565,815. Patented Aug. 11,1896.

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(No Model.) 2 Sheets-Sheet 2;

- r J. TAYLOR. .MEANS'FOR PUMPING OIL WELLS.

No. 565,815. Patented Aug. 11, 1896.

UNITED STATES PATENT OFFICE.

JACOB TAYLOR, OF PRAIRIE DEPOT, OHIO.

MEANS FOR PUMPING OIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 565,815, dated August 11, 1896.

Application filed May 13, 1895. $eria1 N0- 549,08l. (No model of theinvention, which will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form part of this specification.

My invention relates to means for pumping oil-wells, and has for itsobject to provide means for pumping a number of wells from one power.

The invention consists in an engine worked by compressed air, whereby avertical movement is given to the sucker-rod.

Heretofore it has been usual at each oilwell to provide an engine whichworks the sucker-rod through the medium of a walkingbeam. The movementimparted to the rod by the walking-beam is a lateral movement as well asa vertical movement, and therefore causes considerable wear at thecasing-head. Another objection is that the machinery necessary 'to pumpeach well is expensive.

This invention has for its object to overcome these difficulties byproviding, first, for a vertical movement of the sucker-rod withoutlateral play, and, secondly, by providing an engine having compressedair for its power. Therefore as many engines can be worked from the onecompressor as can be connected thereto, as the sucker-rod is socounterweighted that the power used is only exerted in raising the oil,the weight of the sucker-rod returning the same.

The invention further consists in the parts as shown, described, andclaimed.

In the drawings, Figure 1 is a front elevation of a complete engineconstructed in accordance with my invention. Fig. 2 is a sectional planview on lines a: :0, Fig. 1, showing more practically the means employedfor reversing the stroke of the plunger. Fig. 3 is a detail view of thecam.

1 designates the casing-head; 2, the 1ead-off pipe; 3, the leadoff pipesfor gas, and 4 the sucker-rod.

Thus far I have described that part of the construction of the well,tubing, &c., that is now in use, and which may be of the well- 5 5 knownor of any preferred construction, my invention relating, solely, to themeans by which the sucker-rod is moved.

5 designates upright beams supported upon the lead-off pipes 3, therebeing a cross-beam 6o 6 at the upper end. Secured between the uprights 5about medium the height of the same is a cylinder '7, to the piston ofwhich is secured upon the lower side the sucker-rod 4 and the piston-rod8, the piston-rod having a cross-piece 9 at its upper end, which has avertical movement in the guides 10, by which means it is confined to avertical movement.

J ournaled upon the upper ends of the upright are pulleys 11, over whichrun cables 12, one end of each cable being connected with thecross-piece 9, the opposite ends having a rod 13 secured thereto, uponwhich are weights 14, said weights being of sufficient size tocounterweight the sucker-rod, whereby the power 7 5 needed to be exertedupon the piston-head has only to raise the liquid being pumped.

15 designates the valve-chamber, which is provided with a rock-valve ofanyv desired or well-known description, the stem 16 of the valveextending upon the casing, and 17 designates the supply-pipe leading tothe compressor, and 18 designates the exhaust-pipe.

I will now proceed to describe the means for rocking the valve by whichto change the direction of the stroke of the piston.

19 designates a beam pivoted at 20 to a cross-piece 21, the outer endsof the side beam being impressed by straps 22, the lower ends of sidestrapshaving a weight 23 suspended 9o thereon.

24 designates a sliding rod having lateral movement in front of thevalve-stem 16, said sliding rod having an integral plate 25 and a lug26. Secured upon the valve-stem is one 5 end of the lever 27, theopposite end extending upon the plate 25. Therefore as the sliding rod24 moves back and forth the valvestem 16, and consequently therock-valve, has

a rocking motion imparted thereto and alter- 10o nately admits or cutsoff the supply of air. Depending from the beam 19 is a lever 29, andsecured upon the piston-rod 8 is a camplate 30, the lower end of thelever 29 having a pin 31, which at all times bears against the cam.

The operation is as follows: Reference is had to Fig. 1, in which Viewthe piston is shown as not having completed its downward stroke. As itcontinues to descend the upper end of the cam 30 will fall below the pin31, when the weight 23 will cause lever 19 to rock and carry the lever29, which abuts against the projection 26, causing the lever 24 toslide, through the medium of the lever 27, rocking the valve andallowing the air to pass under the cylinder-head, which commences torise. As the lever 29 passes the center line at every engagement withthe projection 26 by means of a stationary incline 32, by which means asthe piston-rod and cam 30 commence on their upward stroke the pin 31 isengaged by the opposite weight 23 to that shown in the cut, whereby whenthe piston has come to its full upper stroke or when the cam passesabove the pin the operation just described is reversed.

By supporting the weight of the apparatus upon the lead-01f pipes, asdescribed, the pull exerted by the sucker-rod is not transmitted to thecasing, as the strain of the frame is upon the lead-off pipes and causesan equilibrium between these points and thereby prevents movement and aconstant leakage from the casing.

What I claim is- In means for pumping wells, a cylinder, a valve forcontrolling the flow of air thereto, a piston-head in the cylinder, apiston-rod secured thereto and to the sucker-rod, a cam upon thepiston-rod, a lever actuated by the cam, a sliding rod connected to thevalvestem and actuated by the lever, and weights connected to the leverto automatically move the same upon the full stroke of the piston.

In testimony that I claim the foregoing as my own I hereby affix mysignature in presence of two witnesses.

JACOB TAYLOR.

Witnesses CARROLL J. WEBsTER, MAUI) SCHUMAOHER.

